CDM-M-G Series
DUAL DIRECTIONAL COUPLERS
500 MHz to 18 GHz / Stripline Octave Bandwidths / 10, 20, 30 dB Coupling / 50 W / Low Cost / SMA
PRINCIPAL SPECIFICATIONS
Model
Number
Frequency
Range,
GHz
Nominal
Coupling,¤
dB
10
±1.25
20
±1.25
30
±1.25
10
±1.25
20
±1.25
30
±1.25
10
±1.25
20
±1.25
30
±1.25
10
±1.25
20
±1.25
30
±1.25
10
±1.25
20
±1.25
30
±1.25
10
±1.25
20
±1.25
30
±1.25
10
±1.25
20
±1.25
30
±1.25
20
±1.25
30
±1.25
Frequency
Sensitivity,
dB, Max.
±
0.8
±
0.8
±
0.8
±
0.8
±
0.8
±
0.6
±
0.8
±
0.6
Directivity *Insertion
dB,
Loss, dB,
Min.
Max.
22
1.50
0.50
0.40
1.50
0.50
0.40
1.50
0.50
0.40
1.50
0.50
0.40
1.70
0.50
0.40
1.90
0.70
0.60
2.20
1.00
1.00
1.00
1.00
VSWR, Max.
Main Coupled Outline
Line
Lines
Ref.
1.15:1
1.10:1
1
1
2
3
3
4
5
5
6
7
7
8
7
7
8
7
7
8
7
9
9
9
9
21Feb96
CDM-10M-.75G 0.5 - 1.0
CDM-20M-.75G
CDM-30M-.75G
CDM-10M-1.5G 1.0 - 2.0
CDM-20M-1.5G
CDM-30M-1.5G
CDM-10M-3G
2.0 - 4.0
CDM-20M-3G
CDM-30M-3G
CDM-10M-4G
2.6 - 5.2
CDM-20M-4G
CDM-30M-4G
CDM-10M-6G
4.0 - 8.0
CDM-20M-6G
CDM-30M-6G
CDM-10M-10G 7.0 - 12.4
CDM-20M-10G
CDM-30M-10G
CDM-10M-12G 8.0 - 16.0
CDM-20M-12G
CDM-30M-12G
CDM-20M-15G 12.4 - 18.0
CDM-30M-15G
22
1.15:1
1.10:1
20
1.20:1
1.15:1
18
1.30:1
1.25:1
18
1.35:1
1.25:1
16
1.35:1
1.30:1
15
1.40:1
1.40:1
15
1.40:1
1.40:1
¤Coupling is referenced to the
input
and includes frequency sensitivity
* Insertion Loss
including
Coupling Loss
POWER SPECIFICATIONS
Coupled Power ‘‘Loss’’:
10 dB section:
20 dB section:
30 dB section:
Peak Power:
CDM-M-12G:
CDM-M-15G:
All Others:
Input Power (Forward):
0.46 dB
0.044 dB
0.004 dB
2 kW max.
1 kW max.
3 kW max.
50 Watts max.
GENERAL SPECIFICATIONS
Impedance:
50
Ω
nom.
Operating Temperature: -- 55° to +85°C
SMA Connectors:
Female, to meet the
interface rqts.
of MIL-C-39012.
N type connectors:
see CDN-M series
Other frequency bands: Available option
For further information contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531